One thing Pocket might conceivably do is to reprint older novels. When the Kelvin-timeline novels we did were cancelled in 2010, it left a 4-month gap in the schedule, and Pocket filled one of the vacant slots with a reprint of Nightshade, an old TNG novel written by Laurell K. Hamilton before she became hugely successful with her original fiction. I'm not sure there are other authors whose names would sell reprint books in that way, but there might be other ways of selecting older books to reprint. Maybe books that have some vague connection to Discovery's characters and time frame could be reprinted -- say, Sarek, Vulcan's Forge, The Final Reflection, things along those lines. But I'm just speculating, of course.
Well, if they do, I hope they label them as reprints prominently.
I was browsing Amazon and saw that Nightshade was tagged as having a 2010 publication date.
I assumed that this was a post-Nemesis novel and purchased it as I’m currently working my way through the post-Nemesis/relaunch novels for the 24th century series.
It was only after I received it that I noticed it had a 1990s copyright date and realised it was a reprint.